Floor lamps and table lamps should be dispersed about the room such that, separate from any other lighting, they can reasonably light the room for most occasions. The room size will ultimately dictate the number of lamps, but if you have some other light source, three lamps is a good number to consider - one being a floor lamp. Keep in mind that dark lamp shades really restrict the lamp's overall light output.

Sconces, or wall sconces if you prefer, are a very popular lighting fixture with models designed for both indoor and outdoor use. Wall sconces generally don't jut out too far from a wall, like wall lamps can, and are usually fixed in a single position. They can be uplights or downlights, and some designs can even be mounted in either position. This feature just adds to the sconce's versatility. Sconces work well in almost any room, but are ideal for halls and entryways, and can even work well in dining rooms.

If you have a nice plant in the room, try placing a small lamp near it and watch how the leaves cast interesting shadows on the walls. Lampshades too can add to the mood as they cast soft and diffused light. Sometimes the unique shape and patterns on the lamps and their shades elevate the lamps themselves from a functional purpose to an aesthetic statement.